Note that your question is actually ambiguous because it isn't clear how the measurement relates to the page number. Given that the page number is not a point but itself occupies space on the page, how should the number be located with respect to the point that is .75" down and .75" in? Note that this will become more important if you have more than 9 pages so that you go into double digits. In that case, even if you are careful to use tabular, lining figures to number the pages, you will still need to know what should happen as the numbers change the space they occupy.
– cfrMar 9 '14 at 2:57

@lockstep In my current document the number for each page is in a specific location in the top right corner. I want to move each number higher and to the right on the page.
– Peter PalmerMar 9 '14 at 5:54

when I use your suggested MWE I now get a single page numbered 1 at the bottom and eso-pic.dtx printed on the page.
– Peter PalmerMar 8 '14 at 22:29

I get the following error messages when I run your MWE: (i) undefined control sequence \DocInput (ii) undefined control sequence \EnableCrossrefs\CodelineIndex\RecordChanges (iii) two \documentclass or \documentstyle commands.
– Peter PalmerMar 9 '14 at 5:36

Thank you this worked. I needed to remove some of my packages before I got the result. However the general layout has now changed.
– Peter PalmerMar 9 '14 at 17:53

When I use your MWE this is printed on page 1: calc angle=0, scale=1, opacity=1, color=black, contents=[remember picture, overlay] [anchor=north east,inner sep=0pt] at ((currentpage.northeast)+ (−0.75in,−0.75in)) 1; Peter. Palmer is printed on page 2 but there is no page number. Also there are 6 errors.
– Peter PalmerMar 8 '14 at 22:46